Electronic Associates

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Electronic Associates, Inc. (EAI)
HeadquartersLong Branch, New Jersey
ProductsAnalog computers

Electronic Associates, Inc. (EAI) was founded in 1945 by Lloyd F. Christianson and Arthur L. Adamson and began manufacturing analog computers in 1952.[1] Their systems were used by NASA to develop space probes and simulate physical systems.[2] As digital technology matured, they began production of hybrid digital/analog systems, such as the EAI680 with 156 amplifiers, diode function generators and servo-controlled potentiometers to control input parameters.[3]

Under the direction of Robert E. Finnigan, the company developed the first quadrupole gas chromatography–mass spectrometry devices and sold over 500 devices between 1965 and 1966, which accounted for most of the firm's profit.[4]

Other notable employees include Hans Witsenhausen and board member Everard Mott Williams.


  1. ^ James S. Small (2001). The Analogue Alternative - The Electronic Analogue Computer in Britain and the USA, 1930-1975. p. 129. ISBN 0415271193. Retrieved 2015-12-10.
  2. ^ "Company: Electronic Associates, Inc (EAI)". Computer History Museum. Retrieved 2015-12-10.
  3. ^ "Electronic Associates Incorporated". Doug Cowards Analog Computer Museum. Retrieved 2015-12-10.
  4. ^ Brock, David C. (2011). "A Measure of Success". Chemical Heritage Magazine. 29 (1). Retrieved 28 January 2018.
  • Small, James S. (1993). "General-purpose electronic analog computing: 1945-1965". Annals of the History of Computing. IEEE. 15 (2): 8–18. doi:10.1109/85.207740. ISSN 1058-6180.
  • Abramson, Jill; Pound, Edward T. (7 December 1990). "If Crisis Eases, Iraq Would Still Pose a Threat for Which the U.S. Must Shoulder Some Blame". Wall Street Journal. New York, N.Y.: Dow Jones & Company Inc. p. A16. ISSN 0099-9660. ProQuest 398296683. ... Electronic Associates Inc., which supplied a powerful, $500,000 analog computer that could be used for missile testing and development for Saad 16.